WO2023061923A1 - Procédé et système de préparation d'un biomatériau - Google Patents

Procédé et système de préparation d'un biomatériau Download PDF

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Publication number
WO2023061923A1
WO2023061923A1 PCT/EP2022/078072 EP2022078072W WO2023061923A1 WO 2023061923 A1 WO2023061923 A1 WO 2023061923A1 EP 2022078072 W EP2022078072 W EP 2022078072W WO 2023061923 A1 WO2023061923 A1 WO 2023061923A1
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WIPO (PCT)
Prior art keywords
mixing
biomaterial
preparation system
control unit
compartment
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PCT/EP2022/078072
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English (en)
Inventor
Philip Procter
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Biomimetic Innovations Limited
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Publication date
Application filed by Biomimetic Innovations Limited filed Critical Biomimetic Innovations Limited
Publication of WO2023061923A1 publication Critical patent/WO2023061923A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
    • B01F31/86—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations with vibration of the receptacle or part of it
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
    • A61L24/02—Surgical adhesives or cements; Adhesives for colostomy devices containing inorganic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2115—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2135—Humidity, e.g. moisture content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
    • B01F35/2216—Time, i.e. duration, of at least one parameter during the operation
    • B01F35/22161—Time, i.e. duration, of at least one parameter during the operation duration of the mixing process or parts of it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/222—Control or regulation of the operation of the driving system, e.g. torque, speed or power of motors; of the position of mixing devices or elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2430/00—Materials or treatment for tissue regeneration
    • A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/20—Mixing of ingredients for bone cement

Definitions

  • the present invention relates to a method and a system for preparing a biomaterial from at least two components.
  • Another factor to take into account is the need for maintaining sterility up to the point of use. Furthermore, the mixed biomaterial needs to be easily and directly injectable to the site of use. The mixed biomaterial needs to meet the requirements of working time and curing time within a clinically acceptable time frame.
  • injectability window here also called working time
  • working time that is both temperature and time dependent and users are often confronted with a mixed paste that has become uninjectable due to exceeding this injectability window.
  • An object of the invention is to provide an improved method and system for preparing a biomaterial from at least two components.
  • a further object of the invention is to provide a method and system for preparing a biomaterial from at least two components with improved mixing efficiency.
  • a method for preparing a biomaterial from at least two components in a preparation system comprising the steps of: providing at least two biomaterial components in a mixing compartment of the preparation system; measuring at least one feature in the preparation system with at least one sensor, said at least one feature comprising at least temperature and/or humidity; mixing said at least two biomaterial components by a mixing device of the preparation system to which mixing device said mixing compartment can be or is connected; controlling said mixing by a control unit of the preparation system, said control unit being in communication contact with said mixing device and with said at least one sensor, wherein said mixing is controlled such that at least one mixing parameter of said mixing is dependent on a value of said at least one measured feature.
  • a preparation system for preparing a biomaterial from at least two components comprising: a mixing compartment in which the at least two components of the biomaterial to be prepared are provided for being mixed; a mixing device which is connected to or is connectable to the mixing compartment for inducing mixing of biomaterial provided in the mixing compartment; at least one sensor positioned in the preparation system for measuring at least one feature, said feature comprising at least temperature and/or humidity; a control unit which is in communication contact with said mixing device and with said at least one sensor, said control unit being configured to control said mixing device such that at least one mixing parameter of a mixing induced by the mixing device to a biomaterial provided in the mixing compartment is dependent on a value of said at least one feature measured by the at least one sensor.
  • a computer program comprising computer-executable instructions which, when executed by a processor in a control unit in a preparation system as defined above, cause the control unit to control said mixing device such that at least one mixing parameter of a mixing induced by the mixing device to a biomaterial provided in the mixing compartment is dependent on a value of said at least one feature measured by the at least one sensor.
  • a method and a system for preparing a biomaterial from at least two components are achieved in which a mixing of said components is controlled from a control unit and in which said mixing is controlled in dependence on at least one measured feature.
  • mixing can be optimized for different measured features, such as for example for a measured temperature and/or a measured humidity and hereby an improved mixing efficiency is achieved.
  • different temperatures will affect different biomaterials differently.
  • a mixing time can for example be varied in dependence of temperature and/or humidity.
  • a decreased mixing time would be beneficial for increasing temperatures.
  • a mixing power can also be varied in dependence of temperature and/or humidity.
  • an increased mixing power may be needed for increased temperatures. However, for other materials it may be the opposite relation.
  • a needed mixing energy i.e.
  • the control unit can hereby, for example be configured to control the mixing device to increase or decrease a mixing power and increase or decrease a mixing time when a measured temperature is above a certain threshold temperature. Said threshold temperature can for example be 22°C.
  • the control unit can also be configured to control the mixing device to provide a mixing power and mixing time which is directly dependent on a measured temperature according to precalculated formulas which may be experimentally compiled.
  • said mixing is controlled such that at least one mixing parameter of said mixing also is dependent on biomaterial parameters provided to the control unit.
  • Said biomaterial parameters can comprise information about how different mixing parameters should be changed in order for providing as good mixing as possible for a number of different types of biomaterials and in dependence of different values for said at least one measured feature.
  • biomaterial parameters may have been investigated on beforehand and been preloaded into the control unit.
  • Some biomaterial information may also be manually input by a user or digitally read into the control unit at the time of preparing the biomaterial. This can be for example information about which biomaterial is used at this specific time and amount of the different components used at this time.
  • the control unit comprises a processor and algorithms for processing the biomaterial parameters and the at least one measured feature and for controlling the mixing device to provide an optimal mixing for this specific biomaterial under the conditions of a value of the measured at least one feature, i.e. for example at a specific measured temperature.
  • the mixing is specifically adapted both for specific biomaterial parameters and for at least one measured feature.
  • the mixing can be for example adapted for different temperatures which is an important factor for many biomaterials comprising at least two components, such as biomaterial cements.
  • mixing parameters can be varied in dependence of which biomaterial that is mixed, which amount of different components that are provided in the biomaterial and in dependence of a measured feature.
  • an efficient mixing can be provided.
  • Mixing parameters can be for example mixing time and mixing power and if mixing is performed by vibration mixing parameters can also include amplitude and frequency of the vibrations. Values of different mixing parameters are suitably adapted differently for different materials in order to achieve as good mixing as possible.
  • a control unit receives information about at least one measured feature and comprises or can read information about biomaterial parameters and is provided in communication contact with the mixing device such that mixing can be controlled in dependence of both biomaterial parameters and the at least one measured feature, such a controlled mixing is possible.
  • mixing can be optimized for different factors and an improved mixing efficiency is achieved. Furthermore, there is a lower risk for the biomaterial turning hard and uninjectable before it is being used.
  • the method further comprises the step of delivering said mixed biomaterial directly from said mixing compartment to a location where it should be used.
  • said mixing compartment comprises a delivery part through which the mixed biomaterial can be delivered directly to a location where it should be used.
  • the method further comprises a step of sending an alert from the control unit to a user of the preparation system when the mixing is ready, said alert optionally also being indicative of for how long time the mixed biomaterial is usable, i.e. a working time of the mixed biomaterial.
  • the control unit is configured for sending an alert to a user of the preparation system.
  • the method further comprises a step of sending a warning from the control unit to a user of the preparation system if a measured temperature is over a certain threshold temperature over which temperature the biomaterial to be prepared is not suitable to prepare.
  • a user can take actions, such as for example cooling down the biomaterial before preparation and hereby possible waste of material can be avoided.
  • said mixing compartment is a closed and sterile or aseptic mixing compartment.
  • At least the mixing device, the mixing compartment and the at least one sensor are combined in one handheld device which is also used for delivering the prepared biomaterial to a wanted location.
  • the preparation system further comprises a display, signal lights or a speaker being in communication contact with the control unit and being configured for presenting information relating to the preparation process from the control unit to a user of the preparation system.
  • Figure la is a schematic drawing of a preparation system according to one example of the invention.
  • Figure lb is a schematic drawing of a preparation system according to another example of the invention.
  • Figure 2 is a flow chart of a method according to one example of the invention.
  • a preparation system 1 for preparing a biomaterial from at least two components according to one example of the invention is schematically shown in Figure la.
  • Another example of a preparation system 1' according to the invention is schematically shown in Figure lb.
  • the two examples are similar and similar parts are given the same reference numbers. The difference between these two examples is that in the preparation system 1' of Figure lb all components are provided in one and the same handheld device 6, possibly except for a control unit 9 which can be provided either inside the handheld device 6 or remote from the handheld device.
  • the different parts can be provided separate which will be described in more detail below. The two examples are described together below.
  • Biomaterials which are prepared from at least two components are for example different types of cement.
  • the two or more components of these types of materials need to be mixed at the time of use.
  • the components can for example be one in liquid form and one in powder form.
  • the preparation system 1; 1' comprises a mixing compartment 3 in which the at least two components of the biomaterial to be prepared are provided for being mixed.
  • the mixing compartment 3 can in some examples be a closed and sterile or aseptic compartment. This is suitable because many types of biomaterials need to be kept sterile until delivery to the place of use.
  • the biomaterial can also be directly delivered out from the mixing compartment 3 to the position where it should be used.
  • the mixing compartment comprises in some examples a delivery part 11 through which the biomaterial can be delivered directly to a location where it should be used.
  • the mixing compartment 3 may furthermore comprise some kind of piston or plunger 12 for pushing out the biomaterial via the delivery part 11.
  • the mixing compartment 3 can instead be flexible whereby the biomaterial can be pushed out from the mixing compartment 3 via the delivery part 11 by squeezing the mixing compartment 3.
  • the at least two components can be preloaded in the mixing compartment 3.
  • a user can load the components himself into the mixing compartment.
  • the mixing compartment comprises two or more chambers 3a, 3b.
  • the two or more chambers 3a, 3b are separated by some kind of wall 4. This may be for example a breakable wall or an openable wall. Such a wall 4 can for example be broken or opened during an initial phase of mixing.
  • Mixing will be provided to the mixing chamber 3 by a mixing device 5 which will be further described below.
  • the at least two components can be mixed when the wall 4 has been broken or opened.
  • two or more separate chambers 3a, 3b can be provided in the mixing compartment 3 in different ways. In Figures la and lb two serial chambers 3a, 3b are shown. However, the chambers can as well be provided in parallel. Other possibilities than a wall 4 between the chambers can also be provided, such as breakable capsules which are separately enclosing the at least two components and which can break during an initial phase of a mixing process.
  • the whole mixing compartment 3 is in some examples of the invention disposable.
  • the preparation system 1; 1' comprises furthermore a mixing device 5 which is connected to or is connectable to the mixing compartment 3 for inducing mixing of biomaterial provided in the mixing compartment 3.
  • the mixing device 5 is a separate part to which the mixing compartment 3 can be connected.
  • the mixing compartment 3 which is comprising at least two components to be mixed, can be connected to the mixing device 5 when the biomaterial should be prepared.
  • a connection position 5a is schematically shown in the mixing device 5 in Figure la for illustrating where the mixing compartment can be connected.
  • a handheld device 6 comprising both the mixing device 5 and the mixing compartment 3.
  • the mixing device 5 is connected to the mixing compartment 3.
  • the whole handheld device 6 can be a disposable device.
  • the mixing compartment 3 can be exchangeable whereby in such examples only the mixing compartment is disposable and the rest of the handheld device 6 can be reused for another mixing compartment 3.
  • the handheld device 6 is suitably also used for delivery of the mixed biomaterial.
  • the mixing can be performed for example by vibrating the mixing compartment 3 by the mixing device 5 or by inducing vibration in the biomaterial components by the mixing device 5 by ultrasound.
  • the mixing device 5 comprises some kind of excitation device 15 which can be for example a vibration device and/or an ultrasonic device whereby vibrations or ultrasound can be transferred to the mixing compartment 3 when the mixing compartment 3 is connected to the mixing device 5.
  • the excitation device 15 can in another embodiment comprise another means of mechanically transferring a mixing power to the mixing compartment, such as for example movement of an agitation member.
  • the preparation system 1; 1' comprises furthermore at least one sensor 7 positioned in the preparation system 1; 1' for measuring at least one feature, said feature comprising at least temperature and/or humidity.
  • the sensor 7 can be positioned anywhere nearby the mixing compartment 3 or inside the mixing compartment 3.
  • the handheld device 6 can for example comprise the at least one sensor 7. More than one sensor can be provided and more than one feature can be measured.
  • the preparation system 1; 1' comprises furthermore a control unit 9 which is in communication contact with said mixing device 5 and with said at least one sensor 7.
  • the control unit 9 can be a separate unit or can be provided inside the mixing device 5 or inside the handheld device 6.
  • the control unit can be provided in a mobile telephone or a computer or any other device and comprises a processor for executing instructions of a computer program for controlling the mixing device 5.
  • Said control unit 9 is configured to control said mixing device 5 such that at least one mixing parameter of a mixing induced by the mixing device 5 to a biomaterial provided in the mixing compartment 3 is dependent on a value of said at least one feature measured by the at least one sensor 7.
  • Said mixing parameters can also be controlled to vary during the time of mixing.
  • a mixing may comprise different phases which will be described in more detail below.
  • Said mixing parameters can comprise one or more of: time of mixing, power of mixing, amplitude of vibration or ultrasound and frequency of vibration or ultrasound.
  • a mixing can be performed in dependence on at least one measured feature, i.e. at least one mixing parameter will vary in dependence of a value of a measured feature.
  • the power of mixing can, in some examples of the invention and for some materials be increased when a temperature is increasing.
  • the power of mixing can instead be decreased when a temperature is increasing.
  • the time of mixing is a mixing parameter to be controlled the time of mixing can in some examples of the invention be decreased when a temperature is increasing if at the same time the power of mixing is increased.
  • experimental data for each biomaterial to mix can suitably be used for compiling the algorithms to be used by the control system 9 for controlling of the mixing.
  • a similar control of mixing parameters can be provided in dependence of a measured humidity.
  • the control of the mixing can be stepless, i.e. directly dependent on a measured temperature or humidity.
  • the mixing can be controlled differently for different predefined temperature ranges.
  • the mixing parameters can for example be changed if the temperature increases over a certain threshold temperature, such as for example above 22°C.
  • Mixing parameters may also comprise frequency and/or amplitude of vibrations for the mixing.
  • frequency and/or amplitude can in some examples be varied for improving mixing.
  • frequency can be increased for increased temperatures in order to provide efficient mixing.
  • frequency and/or amplitude may be varied differently. Suitable frequencies and amplitudes for different temperatures and/or humidity can be achieved from experimental studies for the different biomaterials.
  • the formulation design of calcium-based biomaterials which are designed for injection usually targets a range of ambient temperature that is between 18 and 22 °C.
  • the temperature is in the range 22 to 26 °C the biomaterial is still mixable but would require a reduced mixing time and an increased mixing frequency because there is a shorter time to accomplish the mixing before the material will begin to thicken and become uninjectable.
  • Algorithms in a computer program which is executed in the control unit for controlling the mixing performed by the mixing device 5 can be designed from experiments for different biomaterials.
  • Mixing time, mixing power, frequency and/or amplitude of vibrations may be varied according to different optimal schemes for different materials which may be found by experiments.
  • Different types of biomaterials which are prepared from at least two components according to the invention will behave differently in dependence of temperature. There may be materials which need increased mixing power for increased temperatures and there may be materials which need decreased mixing power for increased temperatures.
  • the mixing time needs also to be adjusted for increasing temperatures. For some materials which are curing faster at higher temperatures a decreased mixing time is suitable when temperature is increasing.
  • If mixing is performed by vibration also the frequency and amplitude can be varied for providing optimal mixing. Optimal frequency and amplitude for different materials may be found by experiments. A higher frequency may be suitable for increasing temperatures in order to avoid curing of the material.
  • the working time before the material becomes uninjectable is the working time before the material becomes uninjectable.
  • the biomaterial needs to be injected or used within this working time.
  • Setting time or curing time is a time until the biomaterial for example is tap hard.
  • Both working time and setting time are temperature dependent, whereby increased ambient temperature often will reduce both working and setting times whilst decreased temperature will increase these times.
  • the ambient temperature is in the range 22-26 °C
  • the working time will be reduced by up to 50% in comparison to the working time in the temperature range of 18-22 °C for some materials.
  • Alerts and warnings related to for example working time and too high temperatures can be sent to a user of the preparation device which will be further discussed below.
  • the preparation system can for example warn the user to refrigerate the biomaterial for a time before preparation if the temperature is above a certain temperature. For some biomaterials such a warning can be sent for temperatures above for example 26 °C.
  • the mixing device 5 may in some examples, as mentioned above, comprise some kind of excitation device 15 which can be for example a vibration device or an ultrasonic device.
  • excitation device 15 can be for example a vibration device or an ultrasonic device.
  • the mixing parameters to be varied may not only be time and power but may also include amplitude and frequency.
  • the possible amplitude and frequency ranges will differ.
  • an excitation device 15 is a piezo electric vibration element which would have a relatively low amplitude and high frequency.
  • An ultrasonic device such as an ultrasonic horn, will have a lower amplitude and an ultra-high frequency.
  • the control system 9 can hereby be configured to control the mixing device 5 to provide mixing by vibrations of a certain amplitude and/or frequency in dependence of a measured feature, for example a measured temperature or humidity.
  • a higher frequency and/or amplitude of vibrations for mixing may for example be suitable for higher temperatures.
  • the frequency and/or amplitude may for example be increased or decreased with increased temperature.
  • the mixing process can furthermore be controlled in more detail.
  • the mixing parameters may in some examples of the invention suitably be controlled to be different in different phases of the mixing process.
  • there may be a first phase of mixing requiring higher energy than a second phase of the mixing.
  • the mixing of powders and liquid in general requires different frequencies and amplitudes during the mixing cycle.
  • the liquid and power may require a larger amplitude and a lower frequency, compared to amplitudes and frequencies for following phases, to begin incorporation of the liquid in the powder mass.
  • the first phase is completed, i.e. there is no large pockets of dry powder left, a lower amplitude and a higher frequency is required until powder clumps are incorporated.
  • amplitude and frequency can be varied in the different phases as follows: For a first phase the amplitude can be chosen to be equal to a maximum amplitude and the frequency can be chosen to be 20% of a maximum frequency. For a second phase the amplitude can be chosen to be 50% of the maximum amplitude and the frequency can be 80% of a maximum frequency and in a third phase amplitude can be chosen to be 20% of a maximum amplitude and frequency can be 20% of a maximum frequency.
  • the time duration for each of the phases can of course be varied differently as required by different materials. The percentage numbers given above are only examples and may also be varied differently for different materials.
  • a control of the mixing can comprise many variables and the mixing can be made very specific for different materials and different circumstances, such as ambient temperature and/or humidity.
  • the control unit comprises all such information about different mixing phases and different mixing parameters for different biomaterials for the different mixing phases. This information is included in the biomaterial parameters which will be further described below.
  • the control unit is configured for controlling the mixing device accordingly.
  • said control unit 9 is further configured to control said mixing device 5 such that at least one mixing parameter of said mixing is also dependent on biomaterial parameters provided to the control unit 9.
  • the biomaterial parameters can be preloaded in the control unit 9 or can be input to the control unit.
  • Input can be manual input by a user of the preparation system or digital reading from, for example a tag.
  • a tag can for example be provided to the mixing compartment 3 and can comprise information about type of material and amount of the different components.
  • Said biomaterial parameters may comprise information about how different mixing parameters suitably are changed for providing a good mixing for a number of different types of biomaterials and in dependence of different values for said at least one measured feature.
  • Said biomaterial parameters comprise suitably also information about type of biomaterial and amount of one or more of the components of the biomaterial.
  • the mixing parameters can also be varied throughout a process for mixing a biomaterial.
  • the control unit comprises information about such variations such that the mixing device can be controlled from the control unit to vary the mixing parameters during mixing according to the specific biomaterial being mixed. For example, it may be suitable to start at a slow mixing frequency and increase the mixing frequency during mixing. This was described above as different phases of the mixing.
  • all necessary information for controlling the mixing device 5 in an optimal way for different types of biomaterials and at different ambient conditions are provided in the control unit.
  • control unit 9 is configured for sending an alert to a user of the preparation system 1; 1' when the mixing is ready.
  • Said alert optionally also being indicative of for how long time the mixed biomaterial is usable, i.e. the working time for the mixed biomaterial before it becomes uninjectable.
  • the time window for usability of the mixed biomaterial, i.e. working time is in some examples dependent on the measured at least one feature. For example, a high temperature, for example above 22 °C for some biomaterials, would decrease the working time. Above a certain temperature, for example above 26°C for some materials, the biomaterial is not usable at all.
  • the alert can be in the form of a visible or audible signal.
  • a visible signal can for example be a light, possibly a light with different colours.
  • a red light can be activated when the biomaterial is not usable anymore.
  • a green light could be shown when mixing is ready and for example a yellow light when only a short period is left of a working time window for usability, for example 10 seconds, before the red light will be activated.
  • a display 13 can be provided somewhere in the preparation system 1; 1'.
  • any information can be shown, such as information that mixing is ready, information about for how long time the mixed biomaterial will be useful, a timer counting down the working time window for usability, information showing that the biomaterial is not usable any longer when the time window has elapsed etc.
  • the alert could also be as an audible signal.
  • a speaker is provided somewhere in the preparation system.
  • the audible signal can comprise information about when the mixing is ready and a working time window of usability etc.
  • the audible information can be spoken words or sounds indicating end of time window, such as increasing beeping.
  • control unit 9 is configured for sending a warning from the control unit 9 to a user of the preparation system if a measured temperature is over a certain threshold temperature over which temperature the biomaterial to be prepared is not suitable to prepare.
  • FIG 2 a flow chart of a method for preparing a biomaterial from at least two components in a preparation system as described above in relation to Figures la and lb, according to one example of the invention is shown. The method steps are described in order below:
  • SI Providing at least two biomaterial components in a mixing compartment 3 of the preparation system 1; 1'.
  • S2 Measuring at least one feature in the preparation system with at least one sensor 7, said feature comprising at least temperature and/or humidity.
  • the at least one feature is measured for example in ambient air surrounding the mixing compartment 3 in the preparation system or possibly directly inside the mixing compartment 3.
  • S3 Mixing said at least two biomaterial components by a mixing device 5 of the preparation system 1; 1' to which said mixing compartment 3 can be or is connected.
  • S4 Controlling said mixing by a control unit 9 of the preparation system 1; 1', said control unit 9 being in communication contact with said mixing device 5 and with said at least one sensor 7.
  • the step of controlling the mixing, S4, is hereby not performed after the step of mixing, S3, which is illustrated in Figure 2 by placing the step of controlling the mixing, S4, at the side.
  • Said mixing is hereby controlled such that at least one mixing parameter of said mixing is dependent on a value of said at least one measured feature.
  • said mixing is further controlled such that at least one mixing parameter of said mixing also is dependent on biomaterial parameters provided to the control unit 9. Mixing parameters and biomaterial parameters have been discussed above.
  • the method may also comprise a further step of:
  • S5 Sending an alert from the control unit 9 to a user of the preparation system 1; 1' when the mixing is ready, said alert optionally also comprising information about for how long time the mixed biomaterial is usable.
  • a warning may also be sent to user if a temperature is measured to be above a threshold temperature where it is not suitable to prepare the biomaterial as discussed above.
  • Such alert and warnings can be sent by different means as discussed above, for example as visible or audible signals or as texts on a display.
  • the two steps S4 and S5: "controlling mixing” and "sending alert” are performed by the control unit 9 and are illustrated in Figure 2 at the side of the other method steps.
  • the method may also comprise a further step of:
  • a computer program is also provided according to the invention.
  • Said computer program comprises computer-executable instructions which, when executed by a processor in a control unit 9 in a preparation system 1; 1' as described above, cause the control unit 9 to control said mixing device 5 such that at least one mixing parameter of a mixing induced by the mixing device 5 to a biomaterial provided in the mixing compartment 3 is dependent on a value of said at least one feature measured by the at least one sensor 7.
  • a computer program product comprising a computer-readable storage medium is also provided, the computer-readable storage medium having the computer program as defined above embodied therein.
  • a method for preparing a biomaterial from at least two components in a preparation system comprising the steps of: providing at least two biomaterial components in a mixing compartment of the preparation system; measuring at least one feature in the preparation system with at least one sensor, said at least one feature comprising at least temperature and/or humidity; mixing said at least two biomaterial components by a mixing device of the preparation system to which said mixing compartment can be or is connected; sending an alert to a user of the preparation system from a control unit provided in the preparation system, said control unit being in communication contact with said at least one sensor, said alert comprising information about a working time window during which the mixed biomaterial is usable and said information being prepared by the control unit in dependence of said at least one measured feature.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Epidemiology (AREA)
  • Inorganic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Accessories For Mixers (AREA)

Abstract

L'invention concerne un procédé et un système de préparation d'un biomatériau à partir d'au moins deux composants, ledit procédé comprenant les étapes consistant à : fournir au moins deux composants de biomatériau dans un compartiment de mélange (3) du système de préparation (1 ; 1') ; mesurer au moins une caractéristique dans le système de préparation avec au moins un capteur (7), ladite au moins une caractéristique comprenant au moins la température et/ou l'humidité ; mélanger lesdits au moins deux composants de biomatériau par un dispositif de mélange (5) du système de préparation (1 ; 1') auquel le dispositif de mélange (5) dudit compartiment de mélange (3) peut être ou est raccordé ; commander ledit mélange par une unité de commande (9) du système de préparation (1 ; 1'), ladite unité de commande (9) étant en contact de communication avec ledit dispositif de mélange (5) et avec ledit au moins un capteur (7), ledit mélange étant commandé de sorte qu'au moins un paramètre de mélange dudit mélange soit dépendant d'une valeur de ladite au moins une caractéristique mesurée.
PCT/EP2022/078072 2021-10-11 2022-10-10 Procédé et système de préparation d'un biomatériau WO2023061923A1 (fr)

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SE2151247A SE2151247A1 (en) 2021-10-11 2021-10-11 Method and system for preparing a biomaterial
SE2151247-0 2021-10-11

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WO2023061923A1 true WO2023061923A1 (fr) 2023-04-20

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145250A (en) * 1989-06-15 1992-09-08 Merck Patent Gesellschaft Mit Beschraenkter Haftung Process for the preparation of bone cement
WO2006103410A1 (fr) * 2005-03-29 2006-10-05 The Queen's University Of Belfast Appareil et procédé pour la polymérisation de ciment chirurgical

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Publication number Priority date Publication date Assignee Title
US4463875A (en) * 1982-06-14 1984-08-07 Robert W. Mann Method and apparatus for preparing and applying a two-component cement
SE527528C2 (sv) * 2004-06-22 2006-04-04 Bone Support Ab Anordning för framställning av härdbar massa samt användning av anordningen
GB0510900D0 (en) * 2005-05-28 2005-07-06 Depuy Int Ltd Apparatus for monitoring the cure of a bone cement material
US8057090B1 (en) * 2005-08-31 2011-11-15 Subrata Saha Automated bone cement mixer
SE530219C2 (sv) * 2006-08-11 2008-04-01 Biomet Cementing Technologies Vätskebehållare för bencementblandare
US9161798B2 (en) * 2008-02-01 2015-10-20 Dfine, Inc. Bone treatment systems and methods
WO2009097892A1 (fr) * 2008-02-04 2009-08-13 Coltene Whaledent Ag Dispositif de mélange
EP2338589A1 (fr) * 2009-12-23 2011-06-29 Krämer AG Bassersdorf Procédé et dispositif de préparation de masses à partir d'au moins deux composants
US9931468B1 (en) * 2015-11-02 2018-04-03 Abyrx Inc. Combined mixing and dispensing device for surgical material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145250A (en) * 1989-06-15 1992-09-08 Merck Patent Gesellschaft Mit Beschraenkter Haftung Process for the preparation of bone cement
WO2006103410A1 (fr) * 2005-03-29 2006-10-05 The Queen's University Of Belfast Appareil et procédé pour la polymérisation de ciment chirurgical

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